I will be travelling to Zurich in April and would like to travel in Golden pass line. I will be having a Swiss pass. Request your answer on following questions.
1. I do not intend to do the entire journey from Lucerne-interlaken-Zweisimmen-Montreux. Kindly confirm which 1 or 2 sections of the journey are best in terms of scenic beauty from 2nd class carriages?
2. Is reservation mandatory for any section of the journey?